Extremly low offshore wind potentials

pypsa-meets-earth / pypsa-earth

PyPSA-Earth: A flexible Python-based open optimisation model to study energy system futures around the world.

https://pypsa-earth.readthedocs.io/en/latest/

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Extremly low offshore wind potentials #867

Open energyLS opened 11 months ago

energyLS commented 11 months ago

Checklist

[x] I am using the current main branch or the latest release. Please indicate.
[ ] I am running on an up-to-date pypsa-earth environment. Update via conda env update -f envs/environment.yaml.

Describe the Bug

The offshore wind potential (p_nom_max ) for MAR is only 16 MW. This is way too small. Tested for MAR, GADM 1 region, will have a closer look soon.

energyLS commented 10 months ago

@AlexanderMeisinger reports much higher and realistic values for MAR, using Voronoi clustering: offwind-ac 94.228619 GW offwind-dc 690.327135 GW

ekatef commented 10 months ago

@AlexanderMeisinger reports much higher and realistic values for MAR, using Voronoi clustering: offwind-ac 94.228619 GW offwind-dc 690.327135 GW

Hey @energyLS! Many thanks for reporting. Very interesting.

Just to clarify, we have a big difference in the total offshore wind potential for the same model, depending on the clustering method, right? @AlexanderMeisinger can you please confirm if that is the case?

AlexanderMeisinger commented 9 months ago

Hey @ekatef,

I have just looked at it again and can confirm that there is a difference in potential depending on the parameter alternative_clustering.

I have modelled Morocco twice for 2030 and checked the potential of solar and wind. I only changed the parameter alternative_clustering. Then I checked the potential and saw the differences:

Potential Morocco in GW with alternative_clustering: false (Voronoi) offwind-ac | 94.228619 offwind-dc | 690.327135 onwind | 562.832323 solar | 873.575196

Potential Morocco in GW with alternative_clustering: true (GADM) offwind-ac | 0.013305 offwind-dc | 0.000000 onwind | 564.653734 solar | 878.389596

ekatef commented 9 months ago

Hey @ekatef,

I have just looked at it again and can confirm that there is a difference in potential depending on the parameter alternative_clustering.

I have modelled Morocco twice for 2030 and checked the potential of solar and wind. I only changed the parameter alternative_clustering. Then I checked the potential and saw the differences:

Potential Morocco in GW with alternative_clustering: false (Voronoi) offwind-ac | 94.228619 offwind-dc | 690.327135 onwind | 562.832323 solar | 873.575196

Potential Morocco in GW with alternative_clustering: true (GADM) offwind-ac | 0.013305 offwind-dc | 0.000000 onwind | 564.653734 solar | 878.389596

@AlexanderMeisinger A very interesting catch! Thanks a lot for reporting.

davide-f commented 9 months ago

This is just a guess, but my feeling is that with gadm clustering, we need to make sure to account for off-shore regions and include them. This may be the result of the gadm shapes not covering off-shore regions that leads to basically neglect the off-shore potential. A possible solution is to include the off-shore regions into them or to extend the gadm shapes facing the sea to include the offshore areas